SerGetBuf

SerGetBuf Get the number of bytes in an input driver's buffer

#include <Serial.h> Serial Drivers

OSErr SerGetBuf( refNum, count );

short refNum ; input driver reference number

long *count ; number of bytes in buffer

returns Error Code; 0=no error

SerGetBuf gets the number of bytes in the buffer for the specified input

driver.

refNum is the parameter that identifies the input driver with the buffer that

is being counted.

count is the total number of bytes in the buffer.

Returns: an operating system Error Code.

noErr (0) No error

Notes: This call is equivalent to a Device Manager Status call with csCode=2

and with the count returned as a long in csParam.

Referenced by (3):